CVE-2025-40080

high

Description

In the Linux kernel, the following vulnerability has been resolved: nbd: restrict sockets to TCP and UDP Recently, syzbot started to abuse NBD with all kinds of sockets. Commit cf1b2326b734 ("nbd: verify socket is supported during setup") made sure the socket supported a shutdown() method. Explicitely accept TCP and UNIX stream sockets.

References

https://git.kernel.org/stable/c/c365e8f20f4201d873a70385bd919f0fb531e960

https://git.kernel.org/stable/c/9f7c02e031570e8291a63162c6c046dc15ff85b0

https://git.kernel.org/stable/c/808e2335bc1cf2293b9e36ccc94c267c81509c71

https://git.kernel.org/stable/c/4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7

https://git.kernel.org/stable/c/37ad11f20e164c23ce827dd455b42c0fdd29685c

Details

Source: Mitre, NVD

Published: 2025-10-28

Updated: 2025-10-30

Risk Information

CVSS v2

Base Score: 6.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Severity: High

EPSS

EPSS: 0.00018